// pages/goods_list/index.js
import { request } from "../../request/index.js";
import regeneratorRuntime from "../../lib/runtime/runtime";

Page({
  data: {
    tabs: [
      {
        id: 0,
        value: "综合",
        isActive: true
      },
      {
        id: 1,
        value: "销量",
        isActive: false
      },
      {
        id: 2,
        value: "价格",
        isActive: false
      }
    ],
    goodsList: []
  },
  // 接口参数
  QueryParams: {
    query: '',
    cid: '5',
    pagenum: 1,
    pagesize: 10
  },
  // 总页数
  totalPages: 1,

  onLoad: function (options) {
    this.QueryParams.cid = options.cid||''
    this.QueryParams.query = options.query||''
    this.getGoodsList();
  },
  async getGoodsList() {
    const res = await request({url: '/goods/search', data: this.QueryParams});
    const total = res.total
    this.totalPages = Math.ceil(total/this.QueryParams.pagesize)
    this.setData({
      goodsList: [ ...this.data.goodsList, ...res.goods ]
    })
    // 没有调用onPullDownRefresh，关闭窗口也不会报错
    wx.stopPullDownRefresh()   
  },

  // 从子组件传递来的标题点击事件
  handleTabsItemChange(e) {
    const { index } = e.detail;
    let { tabs } = this.data;
    tabs.forEach((v, i) => i===index?v.isActive=true:v.isActive=false);
    this.setData({ tabs })
  },
  // 页面上滑--滚动条触底事件
  onReachBottom() {
    if(this.QueryParams.pagenum >= this.totalPages) {
      wx.showToast({
        title: '没有下一页数据',
        duration: 1000
      });
    }else {
      this.QueryParams.pagenum++
      this.getGoodsList()
    }
  },
  // 下拉刷新事件
  onPullDownRefresh() {
    this.setData({ goodsList: [] })
    this.QueryParams.pagenum = 1
    this.getGoodsList()
  }
})